Arc Diary - Offline AI Journal
Private Gratitude Journaling
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Arc Diary is your private AI journal - offline, encrypted, and entirely yours.
No account required. No cloud servers. No internet needed. Your words never leave your phone.
In a world built on noise and surveillance, Arc Diary is the rare exception: a beautifully minimal writing space powered by advanced on-device AI, where your privacy is not a setting - it is the foundation.
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KEY FEATURES
• Chapters
Don't just count your days, give them meaning. Arc Diary gently organizes your daily notes into titled "Chapters," naturally grouping your days into the actual moments and stories you are living through, Not just dates. Arcs.
• Reflections
Experience a journal that writes back. When you share a thought, the "Reflections" feature acts as a wise listener, replying with a beautifully written, calm insight that helps you see your own thoughts more clearly.
• Absolute Privacy:
Your words remain entirely yours. Arc Diary is powered exclusively by advanced on-device AI. No internet connection required, zero cloud servers and no mandatory accounts. What you write never leaves your phone.
• Calm & Crafted Experience
Fluid, cinematic interface. Every interaction is designed to feel like stepping away from the noise - not deeper into it.
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Life is messy. Stories give it structure.
Terms of Use: https://arcdiary.app/terms-of-service.html
Privacy Policy: https://arcdiary.app/privacy-policy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Deeper Reflections: Benefit from highly highly contextual, meaningful responses that focus more accurately on your message.
• Smoother Look & Feel with a fluid layout adjustments that seamlessly follow your writing.
• Improved Onboarding: Enjoy a more focused introduction to the app with unnecessary steps removed.
• Rock-Solid Stability: Fixed underlying issues to ensure significantly more stable experience.
The developer, Muthana Almaiah, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Muthana Almaiah
- Size
- 64.1 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- In-App Purchases
Yes
- ARC Premium Yearly $49.99
- ARC Premium Monthly $9.99
- Copyright
- © 2026 ARC Diary